divides twice to form four daughter cells. These four daughter cells only have half the number of chromosomes?of the parent cell – they are haploid. What only occurs during meiosis? Meiosis only occurs inreproductive cells, as the goal is to create haploid gametes that will be used in ...
1.(Biology) a type of cell division in which a nucleus divides into four daughter nuclei, each containing half the chromosome number of the parent nucleus: occurs in all sexually reproducing organisms in which haploid gametes or spores are produced. ComparemitosisSee alsoprophase2 ...
(interphaseInterphaseThe interval between two successive cell divisions during which the chromosomes are not individually distinguishable. It is composed of the g phases (g1 phase; g0 phase; g2 phase) and s phase (when DNA replication occurs).Cell Cycle), followed by 2 rounds of cellular ...
but prior to the start of meiosis, during the S phase of interphase, all of theDNAin the germ line cells is replicated, such that each cell contains two copies of identical genetic material. These replicas are bound by a centromere and are referred to as sister chromatids. At this point,...
There is a strong correlation between age and cancer, but the mechanism by which this phenomenon occurs is unclear. We chose Saccharomyces cerevisiae to ex... MA Mcmurray,Daniel E. Consenting - 《Science》 被引量: 349发表: 2003年 加载更多研究点推荐 cell division ...
For meiosis, discuss crossing over (what it is, when it occurs, and its consequences). How does the process of meiosis contribute to the genetic variation of Sordaria? Meiosis of a diploid cell results in what happening? What's the difference between mitosis and meiosis? Explain the processes...
The cell division occurs in two forms, namely mitosis, which occurs in somatic cells to increase the mass and size of an individual, while meiosis occurs in sex cells to form gametes.Answer and Explanation: Become a Study.com member to unlock this answer! Create your account View this ...
Regulation of the meiotic G1–S-phase transition The decision to enter the meiotic cell cycle occurs in response to cues that vary greatly among different organisms. In multicellular organisms, extrinsic cues from surrounding cells control the differentiation of germline stem cells that will enter ...
Meiosis I is the phase in which two haploid cells are produced from a single diploid cell. What happens during the pachynema stage of prophase I? A. Synapsis or intimate pairing occurs B. The diploid chromosomes condense to form long thin threads C. RNA synthesis ceases and the chromosomes ...
C) Meiosis II occurs in a haploid cell, while mitosis occurs in diploid cells. D) Crossover takes place in meiosis II. Answer: C 45) What is a major difference between mitosis and meiosis I in a diploid organism? A) Sister chromatids separate in mitosis, while homologous pairs of chromo...